在异构图形上学习异构意识的表示
概括
这项研究介绍了Hetero$^{2}$2Net,一个新的异构感知异构图形神经网络 (HGNN). 它有效地处理复杂的现实世界图形,在节点分类任务中超越现有方法.
科学领域:
- 图形神经网络的神经网络
- 机器学习 机器学习
- 数据挖掘 数据挖掘
背景情况:
- 现实世界的图形是复杂的,具有全球异质性和局部异质性.
- 现有的图形神经网络 (GNN) 难以处理异构性,特别是在异构图中.
- 不同质的图形神经网络 (HGNN) 往往继承了GNN的局限性,未能将其概括为异构图形.
研究的目的:
- 为了研究异构图中的异构性.
- 提出用于量化异构图中的异构性度量的指标.
- 开发一种意识到异构的HGNN,能够处理同构和异构的异构图.
主要方法:
- 在使用元路的异构图中确定异构性.
- 为异性恋水平提出了两个定量指标.
- 开发了 Hetero$^{2}$2Net,结合了掩盖的元路和标签预测任务.
- 根据五个现实世界的异质图表基准进行评估.
主要成果:
- 经验调查显示,HGNN与异性恋异质图进行斗争.
- 在半监督节点分类中,Hetero$^{2}$2Net表现出卓越的性能.
- 该模型成功地扩展到一个大型工业规模的图形 (13M节点,157M边缘).
结论:
- 异构性是异构图分析中的一个关键挑战.
- Hetero$^{2}$2Net有效地解决了HGNN中的异性恋问题.
- 拟议的模型为复杂的现实世界异质图提供了一个可扩展和有效的解决方案.
相关概念视频
The Representativeness Heuristic
16.2K
The representative heuristic describes a biased way of thinking, in which you unintentionally stereotype someone or something. For example, you may assume that your professors spend their free time reading books and engaging in intellectual conversation, because the idea of them spending their time playing volleyball or visiting an amusement park does not fit in with your stereotypes of professors.
16.2K
¹H NMR Chemical Shift Equivalence: Homotopic and Heterotopic Protons
2.6K
Protons in identical electronic environments within a molecule are chemically equivalent and have the same chemical shift. The replacement test is a useful tool to identify chemical equivalence and predict NMR spectra. A substituent replaces each of the protons being examined and the resulting molecules are compared. If the same molecule is obtained, the protons are equivalent or homotopic. Replacement of any hydrogens in ethane by chlorine yields chloroethane because all six protons are...
2.6K
Homogeneous Equilibria for Gaseous Reactions
25.8K
Homogeneous Equilibria for Gaseous Reactions
For gas-phase reactions, the equilibrium constant may be expressed in terms of either the molar concentrations (Kc) or partial pressures (Kp) of the reactants and products. A relation between these two K values may be simply derived from the ideal gas equation and the definition of molarity. According to the ideal gas equation:
For gas-phase reactions, the equilibrium constant may be expressed in terms of either the molar concentrations (Kc) or partial pressures (Kp) of the reactants and products. A relation between these two K values may be simply derived from the ideal gas equation and the definition of molarity. According to the ideal gas equation:
25.8K
Test for Homogeneity
2.1K
The goodness–of–fit test can be used to decide whether a population fits a given distribution, but it will not suffice to decide whether two populations follow the same unknown distribution. A different test, called the test for homogeneity, can be used to conclude whether two populations have the same distribution. To calculate the test statistic for a test for homogeneity, follow the same procedure as with the test of independence. The hypotheses for the test for homogeneity can...
2.1K
Vector Algebra: Graphical Method
14.2K
Vectors can be multiplied by scalars, added to other vectors, or subtracted from other vectors. The vector sum of two (or more) vectors is called the resultant vector or, for short, the resultant.
We use the laws of geometry to construct resultant vectors, followed by trigonometry to find vector magnitudes and directions. For a geometric construction of the sum of two vectors in a plane, we follow the parallelogram rule. Suppose two vectors are at arbitrary positions. Translate either one of...
We use the laws of geometry to construct resultant vectors, followed by trigonometry to find vector magnitudes and directions. For a geometric construction of the sum of two vectors in a plane, we follow the parallelogram rule. Suppose two vectors are at arbitrary positions. Translate either one of...
14.2K
Pleiotropy
41.2K
Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
41.2K


